Apparatus for the manufacture of lamp-black



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sycABoTgJr. APPARATUS FOR THE MANUFACTURE OF LAMP BLACK. No. 388,475.Patented Aug. 28, 1888.

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M V s. OABOT, Jr. APPARATUSIFOR THE MANUFACTURE OF LAMP BLACK. No.388,475 Patented Aug. 28, 1888. a L a Z ..'..A.'..J

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UNITED STATES PATENT OFFICE.

SAMUEL CABOT, JR, OF BOSTON, MASSACHUSETTS, ASSIGNOB TO GODFREY L.OABOT, OF WORTHINGTON, PENNSYLVANIA.

APPARATUS FOR THE MANUFACTURE OF LAMP-BLACK.

SPECIFICATION forming part of Letters Patent No. 388,475, dated August28, 1888.

Application filed March 18, 1884. Serial No. 124.627. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL OABOT, J r., a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented certain new and useful Improvements in Apparatus for theProduction of Lamp-Black, of which the following is a specification,reference being had therein to the accompanying drawings.

My invention relates to the production of lamp-black; and it consists incertain apparatus therefor, as hereinafter described.

The object of my invention is to produce a lamp-black-making apparatusof simple and reliable construction, and to reduce the waste in themanufacture of lamp-black to the mini- In the drawings, Figure 1 is planview of a multiflame revolving lamp or burner for the production oflamp-black. Fig. 2 is a view, chiefly in vertical section,on the line 22 of Fig. 1, of said lamp, showing its relative position with regard tothe collecting plate or surface.

Fig. 3 is a vertical section on the linel 1, Fig.

1. Fig. 4 is a cross-section of a portion showing scrapers and gatheringbox or hopper. Fig. 5 is a View similar to Fig. 2, but showing amodified construction of revolving burner. Fig. 6 is a side elevation ofa reciprocating lamp and collecting plate or surface. Fig. 7 is a planof the modification shown in Fig. 6; and Fig. Sis a diagram, on areduced scale, of the'building, lamp-black-collection plate, exhaustapparatus, and driving apparatus.

The reference-letter a indicates the collecting plate or surface,usually a large metallic plate having smooth under surface, and anysuitable arrangement for cooling, as by covering the upper surface withwater. This plate is supported in suitable manner from the walls or roofof the building, as by brackets b, fixed to the walls or tosupporting-pillars. Part of the collecting-plate may be supported on thecollar 0, which is vertically adjustable on standard eby means ofset-screws. The plate is vertically adjustable at its edges by means ofscrews 8 bearing on the brackets.- By this means a large plate can bekept practically level.

The revolving multiflame-lamp is placed a little below and practicallyparallel with the under surface of plate a, the burners d being a shortdistance from said surface. These burners are supplied with gas(vapor oroil) through tubes j from central column, e, which is hollow andreceives its gas-supply from a pipe, preferably beneath the surface, asat f. The tubes or pipes Z are arranged parallel with each other, bypreference, and supported at their ends on a ring, at, of angle-iron,and mediately by horizontal bars or straps 0, which have end bearings onthe riugm and central support on the collar 19, which is loose upon andvertically adjustable on the central column, e, by means of a fixedcollar, p, secured to the column by set-screws.

The ring at may be supported by struts or braces n, which are secured attheir lower ends to collar h, slight adjustments being provided, as byslots and set-screws, so that the burners (I may be as nearly aspossible ln a horizontal plane and parallel with the bottom of plate a.

The pipes j communicate with each of the burner-tubes Z, and arethemselves supplied with gas through branch pipes t, which communicatewith the revolving collar h on the column 0. The collar h is properlypacked at stuffing-boxes above and below the pipes i, and standard 6 hasholes 9 inside the collar, so that the pipes 13 may always be supplied,while the collar and its attachments revolve on the central standard.

An endless chain, q, encircles the ring at and leads away to suitabledriving-power. By this means the ring, burners, and supply-pipes may berevolved around the central standard,

e, the rate of speed being very slow.

The flow of gas to the burner may be regulated by the screws 1", whichpass through the pipes j. Each screw has a taper point, which enters theshort branch 70, leading to the burner These screws need not act asvalves tables Z. to entirely close the pipes k; but by closing saidpipes in part they impede the flow of gas to the burners, so that thecombustion may be equalized.

The scraper for gathering the deposited black from the collection-plateis shown in 5 Figs. 3 and 4.

A box or hopper, t, is attached to the revolving lamp, so that its upperopen end extends nearly up to the collection-plate a. A bar, it, insidethe box 25, serves as a support for :0 a double row of blades orscrapers, '0, placed preferably at a slight incline, haying spacesbetween them and alternating with each other. As the lamp revolves,these scrapers remove the accumulated lamp-black from plate a, and

it falls down into hopper t.

The lamp-black may be gathered into a tray or drawer at the bottom ofhopper t and removed from time to time, if desirable; but I prefer themethod and apparatus illustrated in Figs. 3 and 8 for removing thelamp-black from the hopper.

A circular receptacle or trough, w, surrounds the standard e at thebottom, and a spout from hopper it leads into the same, a revolvingcover being attached to the end of the spout, so that the top of troughw is closed,except for the spout. The trough w may empty by a chute intoa box, 00, which is in a passage, y, preferably underground, leading tothe exo terior of the building. An exhaust-fan, z, is connected with thepassage 1, and agentle downward draft is thus maintained through thehopper t. This facilitates the descent of the fine particles of black,which are scraped from the plate a by blades 1). The air draft orexhaust may be so strong as to carry the lampblack out through passage,whereit should be received in a settling-chamber.

' The modification, Fig. 5, shows a device by '40 which thepacking-boxes of collar It may be dispensed with,said collar thenserving merely as a support for braces n, and being, as in the formercase, vertically adjustable on the central standard. The two lateralpipes j con- 5 nect directly with hollow column 6. The column c isstepped into the base c as shown at b", so as to revolve therein. Thetop of the column is closed and has a cup for the end of screw e, bywhich screw the central portion of plate a may be raised or lowered. Inthis case the column revolves with the burners, instead of the burnersrevolving around the column. This modification is well adapted for usewith a petroleum-lamp, in which burners'having 5 wicks replace thegas-burners, and the oil is supplied through the pipes either byaforcepump or by a gravity-supply.

Another modification of my device is shown in Figs. 6 and 7, in which areciprocating in 6o stead of a rotary multiburner-lam p is illustrated.

The burner-tubes Z are connected to the main j and they all reciprocateon the frame it as part of the carriage g,which may be drawn to and froby pitmen m, actuated by cranks n, or in other suitable manner. The mainj telescopes over the pipe 15 which leads from the supply-pipe J. Thescrapers vone at each edge of the multiflame-lan1pmay be elasticbrushes, of steel or similar material. They are fastened to bars a andsweep over 'a little more than half of the plate a so that a completereciprocation of the burner sweeps the whole of the plate, the blackthen falling into tray If.

My multiburner-lamp is adjusted to a position as nearly level as may beat a suitable distance from plate a and parallel therewith. The lamp ismade to move slowly and the burners will deposit a thin layer oflamp-black on plate a. The scrapers which follow the burners will removethis lamp-black from the plate, and it is then drawn down (preferably)by the air-draft and removed from the apparatus in the mannerhereinbefore set forth.

By the adjusting mechanism of the plate a, (which is generally largeandheavy, and if made in sections is very apt to be out of level,) andby the construction of lamp shown and described, I am enabled to get thelamp and plate practically parallel, in which position the deviceoperates to best advantage.

I claim 1. The combination, in a multiburner-lamp, of a centralsupporting-standard with adj ustable collars thereon, an external ringwith the burner tubes supported 011 said ring, and braces extending fromsaid collars to the same, substantially as described.

2. A central vertical standard provided with adjustable clamping-collarsand connectingrods, a multiburner-lamp supported thereon, and acollection-plate having adjustable hearing on said vertical standard,substantially as described.

3. The combination, with a central vertical. standard, of amultiburnenlamp supported thereby, an adjustable collar having agaschamber surrounding the standard, said collar provided withpacking-boxes at each end, and the standard having apertures to permitgas-escape into the collar, and connectingpipes leading from the collarto the burners, substantially as described.

4. AI'GVOlVll'lg multiburner-lamp'provided with an external ring ofangle-iron braced to a central standard, with burner-tubes supportedthereby, substantially as described, and an endless driving-chainresting in the angle of said external ring and encircling the same andthe pulley of a suitable motor.

5. The multiburner-lamp composed of parallel tubes Z Z, external ring,at, supportingbars 0 0, extending across the ring from side to sideunder the tubes Z, an adjustable support under the center of said bars,and a suitable gas-supply device, all arranged and combinedsubstantially as set forth.

6. In a multiburner-lamp, the combination ofasupporting-standard,provided with clamping-collars and stay-rods,with arevolving hopper, a revolving scraper, and an air-blast, sub- Intestimony whereof I affix my signature in [O stantially as described.presence of two Witnesses.

7. The combination,with a c0llection-p1ate,- of rotating scrapers tooperate thereon, an SAMUEL OABOT, J R.

5 inclined hopper beneath the scrapers and rotating with them, and acircular stationary Witnesses: deposit-chamber,with which said hoppercom- ERVIN E. GRooK, municates by a chute, substantially as de-ARCHIBALD M. HOWE. scribed.

